Collector-polisher.



No. 803,657. PATENTED NOV. 7, 1905.

o. ZSGHOGKBLT. COLLECTOR POLISHBR.

APPLIOATION FILED MAR.31, 1905.

OSCAR ZSCHOOKELT, OF DRESDEN, GERMANY.

COLLECTOR-POLISHER.

Speccaton of Letters Patent.

Patented Nov. 7, 1905.

Application filed March 31, 1905. Serial No. 253,174.

fo all whom it may concern.l

Be it known that I, OSCAR ZscHoeKnL'r, a subject of the German Emperor,residing at Dresden, Germany, have invented certain new and usefulImprovements in Collector-Polishers, of which the following is aspecification.

The present invention has reference toimprovements in collectorpolishers or smoothers, and relates more specifically to a device to bereadily attached to a dynamo or motor for keeping the working surface ofthe collector, co'mmutator,or contact-rings of electromotors and dynamossmooth and bright; and the object of the invention is to provide meansfor the purpose indicated whereby the collector or contact rings arecontinually and uniformly acted upon by the polisher, thereby completelydoing away with the disadvantages now experienced where no such deviceis used-viz., grinding in of grooves or ruts into the working surfacesand destructive sparking owing to the Worn-o metal particles iiyingabout and accumulating under the contact-brushes.

In order to make my invention more readily understood, I will nowdescribe it with reference to the accompanying sheet of drawings, Figure1 of which represents a vertical sectional elevation of the new device.Fig. 2 is a plan view of same. Fig. 3 is a vertical sectional elevationthrough part of a modification. Fig. 4 is a horizontal sectionalelevation of the modification according to Fig. 3; and Fig. 5 is a frontelevation of a fragment of the modification.

Referring more particularly to Figs. 1 and 2, to the plate l, havingslots 2 for receiving the square parts 3 of the bolts 4, are secured insuitable manner the sockets 5, in which threads the outer, upper half ofthe telescoping casing 6. The two casing-sections are adjustably heldmore or less extended by means of a helical spring 8, encircling a rod9, the lower end of which threads into the bottom part of the casing andthe upper end of which is prevented from sliding through the guideholein the top plate of the casing by means of a cross-piece 10. To thelower inner casing part is secured in suitable manner a block 7,'carrying the polishing medium 18, preferably emery-cloth,with suitablebacking. The device is secured to the motor or dynamo by means of thehangers or yokes 16, which are clamped to the plate 1 by means of thebolts 4, as clearly shown in Figs. 1 and 2. These yokes are slipped overa stationaryT part of the machine, preferably one of the arms supportingthe brush-holder yokes, and are adjustably secured thereto by means ofscrews or in other suitable manner. According to the distance from thecollector-surface 19, the yokes 16 may be swung into one of the twopositions shown in solid anddotted lines in Fig. 1.

By adjusting the pressure of the spring 8, by turning the rod 9 one wayor the other, the force with which the polishing-surface 18 shall bearupon the collector-surface can be regulated. The slots 2 in the plates ladmit of longitudinal adjustment.

In Figs. 3 and 4 is shown a constructional modification of the describeddevice, inasmuch as in this construction there is'provideol in place ofthe polishing medium 18, as described, a roller 12, containing aspirallywound supply-roll of polishing-cloth 2O for the purpose ofeasily renewing the worn-out portion of the emery or the like clothwithout being forced to detach the whole or part of the apparatus forthis purpose.

The roller 12 is open toward one end and secured, by means of aclamping-ring 11, to the hollowed-out bottom part of block 7 of thetelescoping-casing 6. The spindle 13 carries the wound-up supply ofpolishing-cloth and is reduced in diameter near its threaded end, thejournal-sleeve 21 being accordingly stepped and having an outer threadto receive the nut 14. A thumb-nut 17 threads on the spindle end, asshown in Fig. 4. By this means the spindle may be rotated after nut 17has been loosened for'the purpose of unwinding the polishing-cloth andby loosening nut 14 the supply-roller 12 is freed to be rotated forsuccessively bringing all of the surface of the exposed polishing mediuminto working position. The polishing-cloth 2() is drawn out through aslit 15 in the roller-wall and run clear around the roller-surface, andits forward end is secured to the roller in any suitable manner.

For putting in a new roll of polishing-cloth the nut 17 is removed fromthe spindle 13 and the latter withdrawn from the roller 12.

If the collector is in good running order or l IOO IOS

IIO

scoping sections of said carrier, means to regulate the compression ofsaid spring, polishing material carried by said carrier, and means forsecuring said carrier to a part of a machine, substantially as and forthe purpose Set forth.

2. In collector-polishers, a telescoping carrier, a spring interposedbetween the telescoping sections of said carrier, means to regulate thecompression of said spring, polishing material carried by said carrier,and adjustable means for securing said carrier to a part of a machine,substantially as and for the purpose set forth.

3. In collector-polishers, a rotating carrier, a supply of polishingmaterial held on said spindle and adapted to be fed through a slit insaid carrier, means for adjustably securing said rotating carrier to apart of a machine, and means for rotating said -roller and said spindleindependently of one another, substantially as and for the purpose setforth.

4. In a device of the character described, a body member, a polishingmember, a rod on said polishing member projecting through said bodymember, and a spring arranged on said rod and bearing against said bodymember and said polishing member.

5. In a device ot' the type set forth, a body member, a polishingmember, a telescoping connection between said body and polishingmembers, one of the sections of said telescoping connection beingthreaded in said body member,

6. In a device of the type set forth, a body member, a polishing member,a third member threaded in said polishing member, and a rod connectingsaid polishing member with said third-named member.

7. In a device of the character described, a body member, a polishingmember, a third member adjustably connected with said body member, andmeans connecting' said polishing member with said third member andcapable of movement independent thereof.

In testimony whereof I aHX my signature in presence of two witnesses.

OSCAR ZSOHOCKELT.

W'itnesses:

F. H. LEHNERS, CHEMNITZ H. SOHILLING.

